Apparatus for recovering solids from press liquids



1 1927. P" 2 H. E. BERGEN I APPARATUS FOR RECOVERING SOLIIIDS FROM PRESSLIQUIDS Filed Nov. 2, 1925 I I W I II I L w I -l III I N I I II 7 & k. II ,I b. 7 WW QNI x A III II I N .NI Wm A I T, NW NNI I II .Nkwfl g watented pr. 12, 2927.

UNITED STATES lasts.

PATENT "OFFI E.

\ HAROLD E. BERGEN, OF BERKELEY, CALIFORNIA.

APPARATUS FOR BECOVEBING SOLIDS FROM PRESS LIQUIDS.

Application filed November 2, 1925. Serial No. 6 6,197.

My invention relates generally to the recovery of waste materials, andmore particularly toan apparatus for recovering solids from pressliquids, that is, liquids that discharge from presses, and which containa relatively small percentage of solids, and which latter, whenrecovered, constitute a valuable and merchantable product.

My invention, as'herein illustrated and described is especially designedfor the treatment of the waste liquids that discharge from the pressesused in fish canneries, but practically the same method and apparatusmay be advantageously and economically employed in handling any liquidthat may contain small percentages of animal or vegetable matter, andwhich will prove of economicvalue when recovered.

' It will be understood that i 'fish canneries, it is the practice tosubject the fish,

after being properly cooked, to suflicient portion of the oils. However,

2 pressure to extract the "greater proportion, ,of; liquids comprisingprincipally, oil, and water, and which are known as press liquids.Thesepress liquids, according to the pr'esent practice are su jectedtolafiflotation process in order to separate and recoverthe greaterafter ,such

, flotation treatment, there stillv remains in the waste water, .acertain percentage of, oils,

" 'tolwhich adhere) a certain amount of solids,

K press liquids can into useful, products With the f rego ngi and it isthe principal ,ob ect Q. of my: inven- "tioinito provide ifelati 1simple andfeconomic'ally. opefr able "eans; 'cally "all of .tllel hbe'irecoveifed and converted ,poultry food or sea izer Lvi'ew, myinvention, consists in certain novel features ofconstruction:,and...arrangeinent of parts thatwillbe,hereinafterfmore,fullyQ I 'ilescribed and claimedandIillustrataccompanying .drawing'sfiii; wliiclif-A Fig. 1 isa vertical 1 wisethrough the centerfflof a'napparatus embodying the principles ofgmyinvention. Fi 2 is ahorizontal section taken on the line 2---2 ofFig. 1. f 4 Fig. 3 is a cross section taken. on thel ne 3-3 of Fig. 1. i

Fig. 4 is an enlar ed detailf sefctionof a spring heidnaterialdischargecontrolvalve.

.bh'i'i ei ins ants .inft .tak'n length,

. beyond the carried by Fig. 5 is an enlarged crom section taken on theline 5-5 of Fig. 1. Y

Referring by numerals to the accompanying drawings which illustrate apractical embodiment of my invention, 10 designates.

a vertically disposed tank having a removable cap or head 11, andsupported by the latter is a hopper 12 from which depends .the volume ofpress water increases, it rises in said tank until it reaches anddischarges through an outlet 15 at the top thereof.

Arranged on suitable supports in the upper portion of tank 10 just belowoutlet 15 is a screen '16 of fine-mesh, preferably a made in two or moreparts to facilitate insertion and removal, and which screen func tionsas a strainer to prevent solids of appreciable size from passing offwith the li uids that discharge through outlet 15.--

rojectin outwardly from the lower portion of tan 10 is a horizontallydisposed 1 cylindrical member 17 and arranged to rotate in the bottom ofsaid tank and said member 17, is a spiral conveyor 18 that may be drivenin any suitable 'manner, preferably by a sprocket chain 19 operating ona V. sprocket wheel 20.

Arranged in theouter portion of tubular member 17 at the end of conveyor18 is a suitable gate valve 21, and projecting from the end of. member17 beyond said gate ,yalve is a tubular member 22, that is pro- .videdwith relatively small. perforations to form a screen or strainer.

Extending through this perforated tube or screen is a spiral conveyor23, the shaft 24 of which projects a substantial distance 2 outer end ofthe strainer and the outer end of said shaft, is a belt whee 25 thatreceives a belt 26.

Arranged to slide on a key or feather 27 that is seated in shaft 24 atthe discharge.-;

is mounted on a and leadin therefrom back to a suitable point ofischarge is an oil and water duct 33.

The boot 34 of a suitably arranged elevator 35 is disposed below thedischarge end of screen 22, said elevator being for the purpose of conveing the recovered solids to a suitable lo ing or packing platform.

In utilizing the apparatus shown and described, the solids that arecarried into tank 10 with the press liquids gradually settle to thebottom of said tank, and after asuflicient amount of the material hasthus accumulated, conveyor 18 is rotated so as to carry the solids tothe end of the tubular member 17 having gate valve 21.

In due time, valve 21 is opened to permit the accumulated solids to passinto screen 22, within which operates conveyor 23. Sprin 29 is set ortensioned by manipular tion 0% nut 30 so that plug 28 can only openunder a considerable degree of pressure, and as conve or 23 continues tooperate the recovered so ids will be carried through screen 22 andcompressed therein so as to ueeze out practically all liquids such as dil-and water and the latter as into tank 32 and dischar e through out et33.

When the so ids have been compressed to a predetermined degree against,plug 28, the power of spring 29 will be overcome, with the result thatplug 28 will move outwardly a short distance on its key, and consequentlpermit the com ressed solids, practically evoid of press iquid todischarge from the end of the screen 22 into elevator boot 34.

The solids thus recovered, ma be later varied in minor details withoutdeparting from. the' spirit of the invention, the scope of which issetforth in the appended claims.

I claim as my invention: 1. The combination with a press liquid settlingtank having uniform internal diameter throughout its length, of atubular member; extending outwardly from the lower portion of said tank,a conveyor a" aged for operation within said tubular uber and extendingentirely across the of settling tank havi the chamber within saidsettling tank, a gate at the outer end of said member, an indeandextending entirely across the bottom of the chamber within said settlingtank, a gate at the outer end of said member, an independently operableconveyor leading from said gate. a screen surrounding said lastmentionedconveyor and a spring-held valve arranged at the outer end of saidscreen.

3. The combination with a .press liquid settling tank having uniforminternal diameter throughout its length, of a tubular member extendingoutwardly from the lower portion of said tank, a conveyor arranged foroperation within said tubular member and extending entirely across thebottom of the chamber within said settling tank, a gate at the outer endof said member, an independently operable conveyor leading from saidgate, a screen surrounding said lastmentioned conveyor, a spring-heldvalve arranged at the outer end of said screen and means for regulatingthe tension of the spring that holds said valve.

4. The combination with a press liquid settling tank having uniforminternal diameter throughout its length, of a tube leading outwardlyfrom the lower portion of said tank, a spiral conveyor arranged foroperation within said tube, a gate normally closing the outer end ofsaid tube, a per- 105 forated housing leading outwardly from the outerend of said tube beyond said gate and a spiral conveyor arranged foroperation within said perforated housing, the inner end of whichlast-mentioned spiral conveyor is spaced apart fromthe gate at the outerend of the first-mentioned tube.

a 5. The combination with a press liquid settling tankhaving uniforminternal diameter throughout its length, of a tube' leading outwardlyfrom the lower portion of said tank, a spiral conveyor arranged foroperation within said tube, a gate normally closing the outer end ofsaid tube, a perforated housing leading outwardly from the outer end ofsaid tube beyond said gate, a spiral conveyor arranged for operationwithin said perforated housing, the inner end of whichlast-mentionedspiral conveyor is spaced apart from the gate at the outer" end of thefirst-mentioned tube and a spring 1 held valve arranged at the outer endof the' perforated housing.

6..lhe combination with a press liquid or; uniform internal di meterthroughout its length, of a tubular within the inner larger portionofsale tubume'mber -leading outwardly fromthe lower. lar member, whichspiral'conveyor extends portion of said tank, the outer portion ofentirely across the lower end of thev chamsaid tubularmember beingsmaller in diamber within said settling tank and an indeli eter than theinner ortion and said outer pendently operable spiral conveyor arportionof smaller iameter being perforanged for operation wlthin the smallerperrated, a gate located'in said tubular member forated portion of saidtubular member. between the innerand outer ortions .there- In testimonywhereof I afiix mgsi nature. of, a spiral conveyor arrange -.foroperation HAROLD E. B BEEN.

